/*
 * This is a manifest file that'll be compiled into application.css.
 *
 * With Propshaft, assets are served efficiently without preprocessing steps. You can still include
 * application-wide styles in this file, but keep in mind that CSS precedence will follow the standard
 * cascading order, meaning styles declared later in the document or manifest will override earlier ones,
 * depending on specificity.
 *
 * Consider organizing styles into separate files for maintainability.
 */

/* Flashcard Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
}

.animate-slide-up {
  animation: slideUp 0.4s ease-out;
}

.animate-slide-down {
  animation: slideDown 0.3s ease-out;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #e5e7eb;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Keyboard shortcut styling */
kbd {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  font-family: monospace;
  line-height: 1;
  color: #374151;
  background-color: #f3f4f6;
  border: 1px solid #d1d5db;
  border-radius: 0.25rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Mobile Optimizations */
@media (max-width: 640px) {
  /* Improve touch targets */
  button, a {
    min-height: 44px;
    min-width: 44px;
  }

  /* Better spacing on mobile */
  .mobile-spacing {
    padding: 1rem;
  }

  /* Flashcard optimizations */
  .flashcard-container {
    min-height: 60vh;
  }
}

/* Smooth transitions */
.transition-all {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

/* Focus states for accessibility */
*:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* Modal backdrop */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 40;
  animation: fadeIn 0.2s ease-out;
}

/* Modal content */
.modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 50;
  animation: slideUp 0.3s ease-out;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%);
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}